For Mac users, the easiest method is often via the terminal: brew install jruby Use code with caution. Installation Requirements
After downloading and installing, verify that JRuby is working correctly by running: jruby -v Use code with caution.
There are several ways to get JRuby onto your machine depending on your operating system and preferred workflow. 1. Direct Download (Binaries and Executables)
If you frequently switch between different Ruby versions, use a manager. This is the cleanest way to manage your environment: Run rvm install jruby .
JRuby is often faster than MRI for specific Rails workloads and computationally intensive tasks.
Seamlessly call Java libraries from your Ruby code and vice versa.
Before you hit the download button, it’s worth noting why JRuby is a top choice for modern development:
Unlike standard Ruby (MRI), JRuby can utilize multiple CPU cores simultaneously for real-core concurrency.